As anyone who have taken a class of Economics 101 (or Microeconomics) knows, the utility gained from the consumption of a good, in general, declines with each additional unit of the good consumed. In other words, the first unit of consumption of a good or service yields more utility than the second and subsequent units. There are some notable exceptions to this law, but this law is very much generally applicable to consumption of goods.

(In case you still find it hard to get the concept, refer to this video on the law from Khan Academy).

 

One important implication of the law concerning women and marraige is that the marginal utility you gain from a girl's pussy (your gf, wife or whoever) will consistently decline, such that the 10th sex with her will be less good than the first one, and 100th sex with her will be less good than the 10th one and so on.

 

Then what about the marginal cost of consuming one additional pussy from her? In general, the marginal cost will remain constant (at best) or will increase (at worst). More specifically speaking, your marginal cost in terms of monetary, emotional, mental investment for gaining one additional consumption of her pussy will not decrease, if not increase.

 

From these two facts, it necessarily follows that someday your marginal cost of gaining one additional use of pussy will exceed your marginal utility of gaining one additional use of pussy. It's just a matter of time. That day comes sooner or later regardless whether you get married or not. And it is when you should stop investing your resources for gaining her pussy, and leave her. And this is one of the reasons why it's usually not a good idea of getting married for men.

 

One possible objection to this conclusion is that there is much more to romantic, marriage relationship than just sex (such as soul-mate, life-time partnership..., shared interests, hobbies between you and your gf or wife). In theory, I agree. But chances are slim that you can make a meaningful, fruitful life-long relationship with a woman other than about sex. We know it from experience.

 

In short, the law of diminishing marginal utility of Pussy alone is sufficient to be very skeptical of getting married. You don't even need to mention on AWLT or woman's hypergamy etc.